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Echo: linux: security update to 6.1.158-1

medium Tenable Cloud Security Plugin ID 455600

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - In the Linux kernel, the following vulnerability has been resolved: tls: make sure to abort the stream if
 headers are bogus Normally we wait for the socket to buffer up the whole record before we service it. If
 the socket has a tiny buffer, however, we read out the data sooner, to prevent connection stalls. Make
 sure that we abort the connection when we find out late that the record is actually invalid. Retrying the
 parsing is fine in itself but since we copy some more data each time before we parse we can overflow the
 allocated skb space. Constructing a scenario in which we're under pressure without enough data in the
 socket to parse the length upfront is quite hard. syzbot figured out a way to do this by serving us the
 header in small OOB sends, and then filling in the recvbuf with a large normal send. Make sure that
 tls_rx_msg_size() aborts strp, if we reach an invalid record there's really no way to recover.
 (CVE-2025-39946)

Solution

Update the linux library and its related packages to version 6.1.158-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-39946

Plugin Details

Severity: Medium

ID: 455600

Version: Revision 1.2

Type: Local

Published: 10/1/2026

Updated: 10/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.42

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

CVSS Score Source: CVE-2025-39946

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/4/2025

Vulnerability Publication Date: 10/4/2025

Reference Information

CVE: CVE-2025-39946